Abstract: The present invention relates to a distributed collaborative system for preparation and/or maintenance of an emergency response plan. An emergency response plan is a data file containing a plurality of contingencies and respectively, response plans in connection to these contingencies. Different parties, such as property managers, property tenants, emergency respondents and insurance companies, collaborate together electronically via a server to share information and comments on this information. Information on the property is first being provided by some parties (mainly the property manager and tenant) and then, emergency response plans referenced to this information are being prepared and shared on the server by emergency respondents. Following, if necessary, insurance companies, by virtue of their expertise in risk management, open comment threads on this shared information and response plans and, generally, expect responses to their comments or a modification to be carried out by the appropriate party.